Intel 31244 PCI-X 사용자 설명서
62
Test Methodology
The SATA specification defines
for the legal signaling levels
and jitter.
Several of oscilloscopes provide eye pattern masking options to allow the user to set up a mask for
serial data streams such as Serial ATA. Automating this measurement through oscilloscope eye
mask setup takes a the qualitative guess work out of eye pattern analysis.
serial data streams such as Serial ATA. Automating this measurement through oscilloscope eye
mask setup takes a the qualitative guess work out of eye pattern analysis.
Figure 24.
Serial ATA Eye Diagram
B0606-01
+Vmax
+Vmin
V
2
-Vmax
-Vmin
T
1
T
2
T
3
T
4
T
5
T
6
T
7
T
8
Illegal
Region
Table 27.
Timing Requirement
Name
Definition
Notes
Tjitter
t3 -t1
t3 - t1 = t8 - t6
T
t7 - t2
t2 - t1 = t3 - t2
t7 - t6 = t8 - t7
Vdiff
V2 - V1